I just paid $550 for a good, very recent, extremely low mile Stella motor, it even came with a wheel, tire and the crappy catylized exhaust. (I threw the exhaust out). I think the prices on Stell motors have gone down a bit lately.

Well, I have an original PX150 motor woth electric start if anyone wants it. I plan to put seals in it next month. I'll come down a tad on the price to a firm $600. I'm not desperate for cash and I don't mind holding on to the motor until someone really needs it.